FirebaseAnalytics.UserProperty

A UserProperty is an attribute that describes the app-user. By supplying UserProperties,
you can later analyze different behaviors of various segments of your user base. You may
supply up to 25 unique UserProperties per app, and you can use the name and value of your
choosing for each one. UserProperty names can be up to 24 characters long, may only contain
alphanumeric
characters and underscores ("_"), and must start with an alphabetic
character. UserProperty values can be up to 36 characters long. The "firebase_", "google_"
and "ga_" prefixes are reserved and should not be used.

Constants

Indicates whether events logged by Google Analytics can be used to personalize ads
for the user. Set to "true" to enable, or "false" to disable. Default is enabled. See
the documentation
for more details and information about related settings.